<template>
    <div>
        添加讲师
        <el-form label-width="120px">
      <el-form-item label="讲师名称">
        <el-input v-model="teacher.name"/>
      </el-form-item>
      <el-form-item label="讲师排序">
        <el-input-number v-model="teacher.sort" controls-position="right" min="0"/>
      </el-form-item>
      <el-form-item label="讲师头衔">
        <el-select v-model="teacher.level" clearable placeholder="请选择">
          <el-option :value="1" label="高级讲师"/>
          <el-option :value="2" label="首席讲师"/>
        </el-select>
      </el-form-item>
      <el-form-item label="讲师资历">
        <el-input v-model="teacher.career"/>
      </el-form-item>
      <el-form-item label="讲师简介">
        <el-input v-model="teacher.intro" :rows="10" type="textarea"/>
      </el-form-item>


      <!-- 讲师头像：TODO -->
      <!-- 讲师头像 -->
      <el-form-item label="讲师头像">

          <!-- 头衔缩略图 -->
          <pan-thumb :image="teacher.avatar"/>
          <!-- 文件上传按钮 -->
          <el-button type="primary" icon="el-icon-upload" @click="imagecropperShow=true">更换头像
          </el-button>

          <!--
      v-show：是否显示上传组件
      :key：类似于id，如果一个页面多个图片上传控件，可以做区分
      :url：后台上传的url地址
      @close：关闭上传组件
      @crop-upload-success：上传成功后的回调 
        <input type="file" name="file"/>
      -->
          <image-cropper
                        v-show="imagecropperShow"
                        :width="300"
                        :height="300"
                        :key="imagecropperKey"
                        :url="BASE_API+'/eduoss/fileoss'"
                        field="file"
                        @close="close"
                        @crop-upload-success="cropSuccess"/>
      </el-form-item>

      <el-form-item>
        <el-button :disabled="saveBtnDisabled" type="primary" @click="saveOrUpdate">保存</el-button>
      </el-form-item>
    </el-form>
    </div>
</template>
<script>

import teacherApi from '@/api/edu/teacher'
// import ImageCropper from '@/components/ImageCropper'
// import PanThumb from '@/components/PanThumb'
import ImageCropper from '@/components/ImageCropper'
import PanThumb from '@/components/PanThumb'

export default {
components:{ImageCropper,PanThumb},

    data(){
        return{

      teacher:{

         name:'',
         sort:0,
         level:1,
         career:'',
         intro:'',
         avatar:''
      },
      
      //上传弹框组件是否显示
      imagecropperShow:false,
      imagecropperKey:0,//上传组件key值
      BASE_API:process.env.BASE_API, //获取dev.env.js里面地址
       saveBtnDisabled:false   //保存按钮是否禁用

        }

    },
    created(){//页面渲染之前执行
   
       this.init()
    },

    watch:{  //监听
       $route(to,from){  //路由变化方式,路由发生变化，方法就会执行
           this.init()
       }
    },
    methods:{
    close() { //关闭上传弹框的方法
        this.imagecropperShow=false
        //上传组件初  始化
        this.imagecropperKey = this.imagecropperKey+1
    },
    //上传成功方法
    cropSuccess(data) {
      this.imagecropperShow=false
      //上传之后接口返回图片地址
      this.teacher.avatar = data.url
      this.imagecropperKey = this.imagecropperKey+1
    },
        init(){
 //判断路径是否有id值
    if(this.$route.params&&this.$route.params.id){
        //从路径获取id
        const id = this.$route.params.id
        //调用根据id查询的方法
        this.getTeacherInfo(id)
    }else{
        this.teacher = {}

    }
        },

        //老师数据回显
        getTeacherInfo(id){
           teacherApi.getInfo(id)
           .then( response =>{
               this.teacher = response.data.teacher
           })
        },



         saveOrUpdate(){
             if(!this.teacher.id){
                  //添加
                     this.saveTeacher()
             }else{
                 this.updateTeacher()
             }

         },
        
        updateTeacher(){
         teacherApi.updateInfo(this.teacher)
         .then(response=>{
                this.$message({
            type: 'success',      
            message: '更新成功!'
          });

           //回到列表页面，路由跳转
            this.$router.push({path:'/teacher/table'})
         })
        },


        //添加讲师的方法
        saveTeacher(){
            teacherApi.addTeacher(this.teacher)
            .then(response =>{
                //添加成功
                //提示信息
                   this.$message({
            type: 'success',      
            message: '添加成功!'
          });

           //回到列表页面，路由跳转
            this.$router.push({path:'/teacher/table'})

            })
        }

        

    }


}
</script>